B. somehow managed to mistake C3PO for Chewbacca. He claims it was incorrect choice of yarn colour on my part (TBH, it isn't really golden enough, but choosing yarn colours on the internet is non-trivial and it was called "gold").

Yes, I thought the disc was a bit of a give away! The book gets you to brush the Chewy model after you've made it so it looks all shaggy - we'll see how well that works when I get to that point (and if I can find a suitable brush).